All of the Disney buses will leave the port by 10 am. Everyone is expected to be off the ship and through customs by then. They need to clear out so the new group of cruisers can board. My suggestions are to either get a day room at the Hyatt or explore the airport shops and have lunch before going to your gate. That's what we did when we had a 2 pm flight.

Another option would be to rent a car at the port and take in the sites at Downtown Disney before going to the airport.

I just completed a cruise on the Wonder a few weeks ago so I can answer you;

The Wonder docked at Port Canaveral around 4AM. Set the alarm for 4:45AM and went to breakfast at 6AM. By 6:30AM the ship was "cleared" by security and everyone was able to start leaving the ship at that time. Everyone was required to be off the ship by 8AM.

I went through customs which took approx 5 mins and went directly outside to a waiting DLC bus to MCO. The trip to the airport took 45mins and I arrived around 8:45AM. My flight was sched to leave at 1:45PM there was PLENTY of time for anything at the airport before departure. You should have NO PROBLEM at all....